connor4312/cockatiel

Health v2 · maintenance only

Adoption not part of the score

1815 stars · 60 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Cockatiel is a TypeScript/Node.js resilience and transient-fault-handling library inspired by .NET's Polly. It lets developers compose policies like Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent, dependency-free manner.

Use cases

• retry failed http requests with exponential backoff
• add a circuit breaker around database calls
• add timeouts to async operations in node
• limit concurrent calls with bulkhead isolation
• provide fallback values when a service fails
• combine resilience policies for microservice calls

When to choose

• you're building Node.js or TypeScript services that call flaky external dependencies
• you want a Polly-like composable resilience policy API in JavaScript
• you need zero-dependency fault handling with circuit breakers and retries

When to avoid

• you're in .NET and can use Polly directly
• you need resilience at the infrastructure/proxy level rather than in application code
• your project isn't JavaScript/TypeScript

Facets

library · maturity active

error-handling rate-limiting concurrency middleware developer-tools backend microservices apis cross-platform resilience circuit-breaker retry backoff bulkhead-isolation timeout fallback polly-inspired fault-tolerance nodejs typescript

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